nm500 steel equivalent equivalent

The toughness index of Q345B steel should be tested by impact test at 20 ℃. Although the strength of Q345B steel and Q345A steel are the same, the S / P control of Q345B steel is more strict, and the ambient temperatures of NM500 steel equivalent, Q345B steel and Q345A steel are different. The cold impact test refers to the impact test at a certain temperature to obtain the energy consumed by punching the specimen. The more energy consumed, the higher the toughness of the material. Q345A is not subject to impact test. So Q345B steel is better than Q345A steel.

Wear-resistant plates are very easy to understand from the literal. They are steel plates designed for large-area wear conditions. Because of its outstanding wear resistance, wear plates have their own unique uses, such as mining machinery and equipment. Ore processing, transportation of ore, ore and equipment often produce severe friction. NM500 steel equivalent, General steel plates cannot be subjected to friction for a long time and are easily damaged. Wear plates are very effective in solving this problem.

The preparation of NM500 steel equivalent galvanized steel before welding is the same as that of ordinary low-carbon steel. It is necessary to carefully handle the groove size and nearby galvanized layer. In order to achieve penetration, the groove size shall be appropriate, generally 60 ~ 65 °, with a certain gap, generally 1.5 ~ 2.5mm; in order to reduce the penetration of zinc into the weld, the galvanized layer in the groove can be removed before welding. In the practical work, the centralized beveling, no blunt edge technology for NM500 steel equivalent centralized control, two-layer welding process, reducing the possibility of incomplete penetration.

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